Ever since my friend removed my radiator and did a full timing belt, water pump, thermostat service I have had an issue with the coolant temp on my car and I think it is related somehow to the auxilary fan. The coolant temp gauge never goes above middle while driving or at idle, but if I turn off the engine to go into a store or get fuel and then restart the engine the temp gauge goes up on or two ticks above middle but then goes back to normal shortly after I start to drive.
The scan tool shows my temp around 194-196 but does fluctuate to 200 and then back down.
I checked the fan on the passenger side and it doesn't appear to be turning on while the car is running, although when I turn the ac on the fan moves just fine. I thought that there was an autorun feature on the fan after the car was turned off, but I can't find confirmation on this and don't know if changing the sensor (thermal switch) in the lower radiator hose is what I need to do or if I need to change any of the fan relays or a fuse. I don't think changing the coolant temp sensor on the back of the engine makes any sense.
If anybody knows anything about the autorun feature or how best to troubleshoot the fan issue I would appreciate advice or direction.
Thanks
This is for my 01 A4 1.8
The scan tool shows my temp around 194-196 but does fluctuate to 200 and then back down.
I checked the fan on the passenger side and it doesn't appear to be turning on while the car is running, although when I turn the ac on the fan moves just fine. I thought that there was an autorun feature on the fan after the car was turned off, but I can't find confirmation on this and don't know if changing the sensor (thermal switch) in the lower radiator hose is what I need to do or if I need to change any of the fan relays or a fuse. I don't think changing the coolant temp sensor on the back of the engine makes any sense.
If anybody knows anything about the autorun feature or how best to troubleshoot the fan issue I would appreciate advice or direction.
Thanks
This is for my 01 A4 1.8